/*************************************************************************/
/*  broad_phase_2d_basic.h                                               */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                    http://www.godotengine.org                         */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
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/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
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/*************************************************************************/
#ifndef BROAD_PHASE_2D_BASIC_H
#define BROAD_PHASE_2D_BASIC_H

#include "space_2d_sw.h"
#include "map.h"
class BroadPhase2DBasic : public BroadPhase2DSW {

	struct Element {

		CollisionObject2DSW *owner;
		bool _static;
		Rect2 aabb;
		int subindex;
	};


	Map<ID,Element> element_map;

	ID current;

	struct PairKey {

		union {
			struct {
				ID a;
				ID b;
			};
			uint64_t key;
		};

		_FORCE_INLINE_ bool operator<(const PairKey& p_key) const {
			return key < p_key.key;
		}

		PairKey() { key=0; }
		PairKey(ID p_a, ID p_b) { if (p_a>p_b) { a=p_b; b=p_a; } else { a=p_a; b=p_b; }}

	};

	Map<PairKey,void*> pair_map;


	PairCallback pair_callback;
	void *pair_userdata;
	UnpairCallback unpair_callback;
	void *unpair_userdata;

public:

	// 0 is an invalid ID
	virtual ID create(CollisionObject2DSW *p_object_, int p_subindex=0);
	virtual void move(ID p_id, const Rect2& p_aabb);
	virtual void set_static(ID p_id, bool p_static);
	virtual void remove(ID p_id);

	virtual CollisionObject2DSW *get_object(ID p_id) const;
	virtual bool is_static(ID p_id) const;
	virtual int get_subindex(ID p_id) const;

	virtual int cull_segment(const Vector2& p_from, const Vector2& p_to,CollisionObject2DSW** p_results,int p_max_results,int *p_result_indices=NULL);
	virtual int cull_aabb(const Rect2& p_aabb,CollisionObject2DSW** p_results,int p_max_results,int *p_result_indices=NULL);

	virtual void set_pair_callback(PairCallback p_pair_callback,void *p_userdata);
	virtual void set_unpair_callback(UnpairCallback p_unpair_callback,void *p_userdata);

	virtual void update();

	static BroadPhase2DSW *_create();
	BroadPhase2DBasic();
};

#endif // BROAD_PHASE_2D_BASIC_H
